Sub-Membrane Ventilation is very similar to sub-slab suction, and is the most effective radon mitigation Columbus OH for dirt floored basements and crawlspaces. A plastic collection barrier covers the soil and is connected to the mitigation fan which exhausts the radon-laden air to the outside of the building. Aadvanced Aair was established in April 1988 and purchased in January 1993 by current owner, Kevin Mullins. It enters your home through your building’s foundation where it is trapped and concentrates. You breathe it. Our radon company Columbus Ohio inspection monitors will reveal your risk and we can remove it. Address : 7652 Sawmill Rd. Suite 305, Dublin, OH 43016 Ph : 614-766-2858 Google+ : Website : ©